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Spark Plugs
Spark Plug W3DC.
PACK OF 6
Fits:
Porsche 911 2.7L / 3.0L SC 1974-83
Porsche 911 2.7L 1974-75 Carrera
Porsche 911 3.0L 1976-77 Carrera
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917016290
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
This BOSCH spark plug set (pack of 6) is a complete ignition service kit designed specifically for the Porsche 911 3.2-litre Carrera (1984–1989) equipped with a catalytic converter. This set includes all six spark plugs required for a full engine replacement, ensuring even combustion and consistent performance across all cylinders.
PACK OF 6
Fits:
Porsche 911 3.2L 1984 - 1989 *with catalyst
Spark plugs are a vital ignition component, responsible for igniting the air-fuel mixture within the combustion chamber. Correct specification is especially critical on catalyst-equipped engines, as incorrect or worn spark plugs can lead to misfires, inefficient combustion, increased emissions, and potential catalyst damage. These Bosch spark plugs are manufactured to the correct heat range and electrode design required for the 3.2 Carrera with catalytic converter.
Produced to OEM standards, Bosch spark plugs provide reliable cold starting, smooth idle, improved throttle response, and stable engine operation under all driving conditions. Their high-quality construction helps reduce fouling and ensures long service life, making them ideal for routine servicing, preventative maintenance, or restoration work on classic air-cooled Porsche 911 models.
• Generates a precise spark to ignite the air-fuel mixture
• Supports efficient combustion and controlled emissions
• Ensures smooth engine running and reliable starting
Key Functions & Benefits:
• Genuine Bosch manufacture
• Complete set of 6 spark plugs for flat-six engines
• Correct specification for catalyst-equipped 3.2 Carrera
• OEM-quality ignition performance and durability
• Helps maintain fuel efficiency and emissions compliance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015690
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
The NGK spark plug set (pack of 6) is a complete ignition service solution designed specifically for the Porsche 911 3.2-litre Carrera (1984–1989) without catalytic converter. This set includes all six spark plugs required for a full engine replacement, ensuring even combustion and consistent ignition performance across the flat-six engine.
PACK OF 6
Fits:
Porsche 911 3.2L Carrera 1984 - 1989
* Non Catalyst
Spark plugs are a critical ignition component, responsible for igniting the air-fuel mixture within each combustion chamber. On non-catalyst engines, correct spark plug specification is essential to maintain optimal combustion characteristics, throttle response, and engine efficiency. Incorrect or worn spark plugs can result in misfires, rough idle, loss of power, and increased fuel consumption.
• Produces a precise spark to ignite the air-fuel mixture
• Supports efficient combustion and smooth engine operation
• Helps maintain power delivery and fuel efficiency
Key Functions & Benefits:
• Genuine NGK manufacture
• Complete set of 6 spark plugs for flat-six engines
• Correct specification for non-catalyst 3.2 Carrera
• OEM-quality ignition performance and durability
• Long service life with reduced risk of fouling
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015790
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Special Offer Spark Plugs – Discounted Genuine and Performance Ignition Components
Special Offer Spark Plugs bring together discounted genuine, OEM-quality and performance ignition components designed to ensure efficient combustion, smooth engine operation and reliable starting performance. This category features limited-time promotions and clearance pricing on high-quality spark plugs from trusted automotive brands.
At Design911, our Special Offer Spark Plugs include genuine manufacturer-approved plugs and premium aftermarket options from leading brands such as Bosch, NGK and other performance ignition specialists — all selected for correct heat range, durability and precise engine compatibility.
What Do Spark Plugs Do?
Spark plugs are essential engine components responsible for igniting the air-fuel mixture inside the combustion chamber. Their key functions include:
• Creating the electrical spark required for combustion
• Supporting efficient fuel burn and engine performance
• Maintaining smooth idle and throttle response
• Improving fuel efficiency and reducing emissions
• Ensuring reliable cold starts and consistent power delivery
High-quality spark plugs help protect engine components while maintaining optimal performance across all driving conditions.
Why Choose Special Offer Spark Plugs?
Special Offer Spark Plugs are ideal for customers seeking reliable servicing parts at reduced pricing. Benefits include:
• Discounted genuine and OEM-quality spark plugs
• Access to premium ignition brands at promotional prices
• Cost-effective routine servicing and maintenance
• Limited-time savings on essential engine components
• Trusted compatibility with Porsche and performance vehicles
At Design911, all discounted spark plugs meet strict quality and specification standards to ensure correct fitment, heat range accuracy and long-term reliability.
When Should You Replace Spark Plugs?
Special Offer Spark Plugs are ideal when:
• Performing scheduled engine servicing
• Addressing misfires or rough idling
• Improving fuel efficiency and throttle response
• Restoring performance on high-mileage engines
• Taking advantage of limited-time promotional pricing
Replacing worn spark plugs at the recommended intervals helps maintain engine efficiency, reduce strain on ignition components and ensure consistent performance.
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